Bohler CN 18/11-IG description: GMAW wire with controlled delta ferrite content (3-8 FN) for austenitic CrNi steels with increased carbon contents (e.g. 1.4948 / 304H), in the boiler, reactor and turbine fabrication. Approved in long-term condition up to +700°C service temperature (300°C in the case of wet corrosion). Steels to German material no. 1.4550 and 1.4551 which are approved for the high temperature range up to 550°C, can also be welded.